Erosion
Ulcer on the ankle. The skin is eroded away, forming an ulcer. There is significant inflammation surrounding the ulcer.
Stasis ulcer on the ankles and lower legs: The skin of stasis dermatitis becomes thin at first, but may become thick as the condition progresses. The skin may become dark and develop open ulcers that are slow to heal. Stasis dermatitis usually results from venous stasis (pooling of blood in the veins). The blood settles to the lowest part of the body, so stasis dermatitis usually occurs in the lower legs. This picture shows the ulcers which can result from venous stasis.